Photo copy machine



Au 11, 1936. w P, LOYD ET AL 2,050,956

PHOTOCOPY MACHINE Original Filed July 19, 1935 5 Sheets-Sheet 1INVENTQRS Whitten P. ltl /gyd and Maxwell H. L'Ll ATTORNEY Aug. 11,1936. 4 w LLOYD ET AL 2,950,956

PHOTOCOPY MACHINE Original Filed July 19, 1935 5 Sheets-Sheet 2INVENTORS Whtten P L0yd and KM/8U H. F/L'il K 1 ATTORNEY 1935- w. P.LLOYD ET AL 2,050,956

PHOTOGOPY MACHINE Original Filed July 19, 1935 5 Sheets-Sheet 3INVENTQRS Wln'ii'en 7? Llo d and ATTORNEY w. P. LLOYD ET AL 2,050,956

PHOTOCOPY MACHINE Original Filed July 19, 1935 5 Sheets-Sheet 4 INVENTORWhither: 7? L log d and v dxwellHHil ATTORNEY Aug. 11, 1936. w. P. LLoYDET AL PHOTOCOPY MACHINE Original Filed July 19, 1955 5 Sheets-Sheet 5KNVENTORS W/Illiffl P ZLo yd and LL H Had ATTORNEY Patented Aug. 11,1936 UNITED STATES PHOTO COPY MACHINE Whitten P. Lloyd and 'Maxwell H.Hill, Rochester, N. Y., assignors to The Haloid Company, Rochester, N.Y., a corporation of New York Original application July 19, 1935, SerialNo.

32,246. Divided and this application December 13, 1935, Serial No.54,289

Claims.

This invention relates to a photo copy machine, with more particularreference to the type 'of apparatus in which drawings, documents, and.the like, are photographed on a sheet of sensitized paper that travelsthrough the machine from a roll, the exposed portion being fed andsevered after each exposure, and it has for one 'object to affordefficient and simple mechanism for controlling the feeding of the paperin order 'to render more accurate and facilitate the several operations,and to effect an economy in the paper consumption by reducing the amountof wastage.

The principal object of the invention is to afford a simple andpractical mechanism in which the amount of paper fed at each paperfeeding operation depends upon the position of the curtain and iscontrolled by a member that is automatically positioned when the curtainis adjusted, and which serves to stop the operation of the paper feedingmechanism in accordance with the position of the curtain so that whenthe curtain is once positioned at a given point, all subsequentoperations of the paper feeding mechanism will cause a fixed amount ofpaper to be fed, which will not vary until the position of the curtainis again changed.

A further object of the invention is to afford a simple and practicalmechanism for effecting the paper feeding operation and including acontrol member which is operable in one direction to feed-the paper andis then adapted to be returned to its initial position.

To these and other ends, the invention consists in the construction andarrangement of parts that will appear from the following deof a photocopy machine incorporating one embodiment of the invention;

Fig. 2 is a vertical sectional view on the line 2-2 of Fig. 1 looking inthe direction of the arrows, and showing the parts arranged for movingthe curtain, with the pressure roll in engagement with the feed roll;

Fig. 3 is a horizontal sectional View on line 33 of Fig. 2 lookingdownwardly, the pressure roll being in its elevated position engagedwith the feed roll, and the curtain adjusting mechanism in lockedposition;

Fig. 4 is a transverse vertical sectional view on line 4 4 of Fig. 2looking in the direction of the arrows, with the parts in neutralposition;

a Fig. 5 is a transverse vertical sectional view on line 44 of Fig. 2looking in the direction of the arrows, and showing the parts in theposition assumed during the paper feeding operation;

Fig. 6 is a transverse sectional view on line 'fi-Ei of Fig. 2 lookingin the direction of the arrows, with the parts in the position assumedduring the paper feeding operation;

Fig. 7 is a longitudinal Vertical sectional view through the control boxtaken on line 'l-! of Fig, 3, and

Fig. 8 is a detail sectional view on line 88 of Fig. 3.

This application is a division of an application filed by us on July 19,1935, Serial No. 32,246, patented June 2, 1936, Patent No. 2,043,004 towhich reference may be had for an understanding of any parts which arenot essential to the invention herein claimed and are not fullydisclosed herein.

The structure to be described hereinafter is applicable to anelectrically or automatically controlled machine, as Well as a handcontrolled apparatus which is here illustrated, and referring moreparticularly to the drawings in which like reference characters refer tothe same parts throughout the several views, I designates a camera body,see Fig. 1, 2 is the usual bellows, 3 is the pivoted magazine normallyheld in operative relation to the body I by the catches 4, and 5 is theroll box or sensitized paper container from which paper is threaded intothe magazine 3, all substantially in accord with the structuresdisclosed in Patents Nos. 1,992,492, W. P. Lloyd, February 26, 1935, and1,998,324, W. P. Lloyd, April 16, 1935. I

In the mechanism of Patent No. 1,992,492, the curtain was correlatedwith the paper feeding mechanism in such a manner that the latter wasidle while the curtain was moved to open position, and the paper feedmechanism was operated as the curtain was returned to closed position,thus necessitating returning the curtain after each exposure to feed thepaper. In the present structure, the curtain may remain in a fixed openposition for successive exposures, and the curtain opening operationserves to control the paper feed mechanism in such a manner thatrepeated operations of the latter will always effect feeding of a givenamount of paper, dependent upon the position of the curtain. Thedescriptive matter immediately following has to do with the curtain andits operating mechanism.

The curtain is designated at I 0, see Figs. 1 and 2, its lower end beingfastened to endless chains H which travel around sprockets l2 and I3.The

upper end of the curtain is fastened to and wound upon a spring rollerl4, suitably mounted in the magazine, and which acts to retract thecurtain upwardly as the chains to which it is connected are moved in acorresponding direction, and when said chains are moved in the oppositedirection, the curtain is drawn by them downwardly to its closedposition.

The left hand sprocket l3, see Fig. 2, is splined on an operating shaftIt so as to turn when the said shaft is rotated, and also permitrelative endwise movement of the latter. The shaft it has fixed thereona stop plate ll with a series of openings l8 therein, see Fig. 7,adapted to selectively engage a fixed stop l9 on the inner surface ofthe outer wall of the gear box 28, see Fig. 2. The shaft l6 extendsthrough the walls of the gear box and carries an operating handle 2| atits outer end, while 22 is a spring surrounding the shaft l5 and locatedbetween the pinion 23 fixed thereon and the inner wall of the gear box,and acting normally to force the operating shaft 56 to its outermostposition, as shown in Fig. 3.

To open the curtain, or change the position of the curtain, the handle2| and shaft it are for exposure, and upon releasing the handle, the

spring 22 forces the shaft outwardly, and one of the openings 3 in stopplate l'l engages the stop is and holds the shaft l6, and likewise thecurtain, in the position to which it has been adjusted. In the presentmachine, it is unnecessary to change the position of the curtain aftereach exposure, or until a different sized opening is desired, andrepeated exposures can be made with the curtain in one position. Thefeed mechanism and the structure by which the curtain setting determinesthe amount of paper feed will now be described.

The aforementioned pinion 23, see Figs. 2, 3 and'i, on the curtainoperating shaft 96 engages and drives a gear 24 which carries on itsouter face certain indicia that can be observed through an opening 25 inthe gear box 20, see Fig. 1, so that the operator can determine at anytime the the particular position of the curtain. On the rear face of thegear 24 is a stop or projection 26, see Fig. 3, adapted to cooperatewith a stop 2': on a gear 28 that is engaged and driven by a pinion 29,and forms a part of the paper feed mechanism. Pinion 29 is fixed on ashaft 39, see Figs. 2 and 3, which extends through the front wall of thegear box, and carries an operating handle SE for effecting movement ofthe paper feed mechanism, the extent of such movement being determinedwhen the aforementioned stop 21 on gear 28 engages stop 28 on gear 24,the position of the latter having previously been determined by theextent to which the curtain is opened. Gear 28 transmits movement to thepaper feed roll through the mechanism that will now be described.

Referring to Figs. 1, 2, 3, 4 and '7, the gear 28 is fixed on a shaftwhich also has fixed thereon and spaced from the gear 28 an operatingmember or cam 36. Loosely mounted on the shaft 35 is a gear 3! thatengages and drives a pinion 33 connected to the paper feed roll. Theloosely mounted gear 3i has a projection or stop 49, see Fig. 3,extending from its inner side and engageable with a fixed stop 4! on thegear box to limit the return movement of gear 37 and insure alwaysbringing it back to a definite initial position. 42 is a stop extendingfrom the opposite side of gear 37 into the path of a stop or projection43 on the adjacent surface of the cam 36, so that when the operatingmember or cam 36 is turned in an anti-clockwise direction, see Fig. 5,the stop 43 on the cam engages stop 42 on the gear 31 and turns gear 3'!correspondingly and likewise the feed roll. The pinion 38, that isactuated by gear 31, is fixed on a shaft which is connected, through afriction roller clutch 44, see Figs. 3 and 8, with the shaft 45 whichcarries the paper feed roll 46. By arranging the friction clutch 44between pinion 38 and the paper feed. roll 46, the latter is operatedwhen the pinion 38 is driven in one direction, and when the paper feedmechanism is returned to initial position after completion of thefeeding operation, the feed roll 46 remains idle to prevent winding thepaper backwardly.

The cam 36 is connected to gear 31 in such a way as to effect return ofthe latter to initial position, and to this end, an arm 48 is looselymounted on the shaft 35 in the path of the aforementioned stop 42 ongear 3i and is normally held against said stop, as shown in Fig. 4, by aspring 49 connected at one end to the cam 36 and at its opposite end toa lug 53 carried by the arm 48. Thus the spring 49 normally holds thearm 48 against stop 42, and likewise holds stop 49 against stop 4| whenthe gear is in its initial position, the tension of the spring 49 beingsufficient to return the gear 31 to neutral position when the operatingmember or cam is returned. The spring 49 also permits further reversemovement of the cam 36 to effect operation of paper severing mechanismwhich forms no part of the invention herein claimed and which it istherefore unnecessary to describe in any further detail.

The paper is fed, after exposure, by turning the handle 3|, whichactuates feed roll 46, as already described, the latter being thenengaged by a pressure roll which holds the paper thereagainst. Duringthe exposure operation, the pressure roll is in a lowered position awayfrom the feed roll and out of the focal plane, the paper being then heldby clamping means. Before feeding, the paper is reengaged by thepressure roll, and the clamping means released, and the mechanism whichwill next be described has to do with the movable pressure roll andclamping means, and .the manner in which their operation is controlled.

The pressure roll, designated generally at 5|, is mounted on arms 52,see Fig. 6, which are pivoted to swing about an axis 53 whereby thepressure roll is movable from its lower position to its upper position,as shown in Fig. 6, where it is adjacent to the focal plane and holdsthe paper against the feed roll, and after feeding is completed, whenthe parts are returned to initial position, the pressure roll is againswung downwardly to its lowered position out of engagement with the feedroll. To accomplish this, each of the arms 52 carries a pivoted sleeve54, in which is slidably mounted a rod 55 pivotally connected to an arm56 that is loosely mounted on a rock shaft 57, while 58 is a collarfixed on said rock shaft and carrying an ear 59 arranged to engage a pin66 on the arm 56. Thus when the rock shaft 5i is turned in a clockwisedirection, see Fig. 6, the car 59 engages pin 80 and swings the arm 56,likewise moving rod 55 upwardly to the position shown in Fig. 6, andswinging the pressure roll into engagement with the paper feed rollpreliminarily to the paper feeding operation.

During exposure, the sensitized paper is held against the focal planeplate or back by a clamping means that is automatically removed fromengagement with the paper after the pressure roll has engaged thefeeding roll, and since this mechanism forms no part of the subjectmatter of the claims of this application, it is unnecessary to describeit in any further detail, it being understood that the clamping means isrestored to engagement with the paper before disengaging the pressureroll from the feed roll.

The rock shaft 5! is controlled by the operating member or cam 36previously described, and to this end, the cam 36 is cut away at 11, seeFig. 5, to receive a roller or projection 18 on the arm 79 which isfixedly mounted on the rock shaft 57. These parts are so related thatwhen the operating handle 3| is turned in a clockwise direction and theoperating member or cam 36 is at the same time turned in ananti-clockwise direction, the initial part of such movement during thefirst 45 of turning causes movement of the rock shaft 51 from theneutral position shown in Fig. 4 to the position shown in Fig. 5. Duringthis movement of the cam, the pressure roll is moved upwardly intoengagement with the feed roll to the position shown in Fig. 6, and theparts are then ready to feed the paper. Further turning of the cam 36causes the stop 43 on the cam to engage stop 42 on gear 31 and turn thefeed roll, effecting feeding of the paper as already described.

This feeding movement of the paper continues until the stop 21 on gear28 engages stop 26 on gear 24, the position of which definitelydetermines the extent of operation of the feeding mechanism as the partscan move no further. The handle 31 which controls the paper feedingmechanism is then turned in a reverse direction to bring the partspreviously described back to normal position, and they are then readyfor either a paper severing operation or a repetition of the paperfeeding operation already described. It will be understood that the rockshaft 51 is returned to its neutral position, when the cam 36 reaches aposition to permit such movement, by any suitable spring controlled orother devices connected to rock shaft 51, such for instance asillustrated in the parent application from which this application is adivision.

While the invention has been shown and described as applied to certainstructural embodiments of a hand-operated machine, it is not necessarilylimited in this fashion, and the improvements are equally applicable toan automatic machine or to other embodiments differing in details ofconstruction, and this application is intended to cover anymodifications or departures coming within the contemplated purposes ofthe invention or the scope of the following claims.

We claim:

1. In a photo copy machine, the combination with curtain operatingmeans, of paper feeding mechanism, and stop means automatically adjustedby the curtain operating means and cooperating with the paper feedingmechanism to limit its movement in accordance with the position of thecurtain, said stop means being stationary during the paper feedingoperation.

2. In a photo copy machine, the combination with curtain operatingmeans, of paper feeding mechanism, and stop means adjustableautomatically in accordance with the position of the curtain andcooperating with the paper feeding mechanism to limit its movement aftera predetermined amount of paper is fed, said stop means being stationaryduring the paper feeding operation.

3. In a photo copy machine, the combination with curtain operatingmeans, of paper feeding mechanism, and a stop carrier driven by thecurtain operating means and cooperating with the paper feeding mechanismto limit movement of the latter automatically in accordance with theposition of the curtain, said stop carrier being stationary during thepaper feeding operation.

4. In a photo copy machine, the combination with curtain operatingmeans, of paper feeding mechanism, a rotatable stop carrier driven bythe curtain operating means and adapted to occupy various positions inaccordance with the positions of the curtain, the paper feedingmechanism including a second stop carrier, and a stop carried by thelatter and engageable with the first mentioned adjustable stop to limitmovement of the paper feeding mechanism.

5. In a photo copy machine, the combination with curtain operatingmeans, of paper feeding mechanism, adjustable stop means governed by thecurtain operating means andoperating when once positioned to limit oneor more paper feeding operations in accordance with the position of thecurtain.

6. In a photo copy machine, the combination with curtain operatingmeans, of paper feeding mechanism operable independently of the curtainoperating means, and stop means under the control of the curtainoperating means acting to limit movement of the paper feeding mechanismin accordance with the position of the curtain.

7. In a photo copy machine, the combination with curtain operatingmeans, of paper feeding mechanism operable independently of the curtainoperating means, and stop means automatically adjustable in accordancewith the position of the curtain and acting to limit the movement of thepaper feeding mechanism.

8. In a photo copy machine, the combination with paper feeding mechanismincluding a carrier that turns in one direction while feeding paper andin the reverse direction to normal position after feeding, a stop onsaid carrier, of ourtain operating means, and a second stop adjustableautomatically in accordance with the position of the curtain and actingto engage the first mentioned stop and thereby limit movement of thepaper feeding mechanism.

9. In a photo copy machine, the combination with paper feeding mechanismincluding a carrier that turns in one direction while feeding paper andin the reverse direction to normal position after feeding, a stop onsaid carrier, of curtain operating means, a second carrier actuated bythe curtain operating means, and a stop on said second carriercooperating with the first mentioned stop to limit movement of the paperfeeding mechanism.

10. In a photo copy machine, the combination with paper feedingmechanism, of curtain operating means, a rotary carrier actuated by thecurtain operating means, the paper feeding mechanism including a rotarycarrier, said carriers being located in coaxial parallel arrangement,and stops on the carriers cooperating with each other for limitingmovement of the paper feeding mechanism in accordance with the positionof the curtain.

WHITTEN P. LLOYD. MAXWELL H. HILL.

